Abstract
Vinyl Acetate/Crotonic Acid (VA/CA) Copolymer is a polymer formed from vinyl acetate and crotonic acid monomers. VA/CA Copolymer is primarily used as a film forming agent in aerosol hair sprays and other hair preparations. An aqueous solution containing 3.7% VA/CA Copolymer and a hair spray containing 13.75% of the ingredient were relatively harmless when administered to rats in single oral doses of up to 50 ml/kg and 5 g/kg, respectively. These same test materials elicited no skin irritation in rabbits and minimal, transient eye irritation. Hair spray formulations containing 0.86% of the copolymer caused no skin irritation or sensitization when tested in a repeated insult patch test on humans. On the basis of the available information, Vinyl Acetate/Crotonic Acid Copolymer is considered safe as a cosmetic ingredient under present practices of product and concentration use.
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